When it comes to sun exposure and skin health, understanding the nuances of ultraviolet (UV) radiation is crucial. The two primary types of UV rays, UVA and UVB, penetrate the Earth's atmosphere and impact our skin differently. Let’s look into the differences between UVA and UVB rays and explore their distinct effects on your skin.
UVA rays have longer wavelengths compared to UVB rays, allowing them to penetrate deeper into the skin's layers. Think of UVA as the aging rays (you will Age). UVB rays, on the other hand, have shorter wavelengths and primarily affect the skin's surface layers. Think of UVB as the burning rays (you will Burn).
UVB rays are more intense than UVA rays, but they are also partially absorbed by the Earth's ozone layer. Consequently, UVB rays are responsible for the immediate effects of sun exposure, such as reddening, sunburn and tanning. Prolonged exposure to UVB rays increases the risk of skin cancer, including basal cell carcinoma, squamous cell carcinoma and melanoma.
UVA rays are less intense but are present throughout the year and can penetrate glass, making them a constant threat even indoors. Because they're able to penetrate the skin more deeply, UVA rays contribute to long-term skin damage, including premature aging, wrinkles, collagen breakdown and accelerating the aging process. And, make no mistake, exposure to UVA rays can also increase your risk of skin cancer.
To help protect your precious skin, choose a sunscreen labeled "broad-spectrum," which offers protection against both UVA and UVB rays. Look for products with an SPF rating of 30 or higher for adequate protection. We made Broad Spectrum Sunshade Lotion SPF 30 with skin-nourishing aloe, Fair Trade shea butter, Hawaiian kukui nut and rosehip seed oils, plus locally grown Oregon lavender and sage. It’s water- and sweat-resistant and safe for marine life and reefs. Great news for your skin and the planet!
Also, try to limit your time in direct sunlight, especially during peak hours when UV radiation is strongest (typically between 10am and 4pm) and wear protective clothing such as wide-brimmed hats, sunglasses, and long-sleeved shirts, to shield your skin from all UV exposure.
Understanding the differences between UVA and UVB rays is important for effective sun protection and skin health. By taking proactive measures to shield your skin from all UV radiation, you can minimize the risk of sunburn, premature aging and skin cancer. Prioritize sun safety year-round and you will be rewarded with healthy skin for years to come.
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